Paper Title:
Evolution of Extended Defects during Epitaxial Growths: A Monte Carlo Study
  Abstract

Three dimensional kinetic Monte Carlo simulations on super-lattices are applied to study the evolution of stacking faults during epitaxial growths. We show that, in the case of misoriented close packed substrates, these defects can either extend throughout the entire epilayer (i.e. extended from the substrate up to the surface) or close in dislocation loops, in dependence of the deposition conditions. We explain this behavior in terms of a surface kinetic competition between these defects and the surrounding crystal: if the local growth rate of the defect is larger compared with that of the perfect crystal the defect will expands, otherwise it will closes. This mechanisms allows to explain several experimental results on homo and hetero epitaxies.

  Info
Periodical
Materials Science Forum (Volumes 679-680)
Edited by
Edouard V. Monakhov, Tamás Hornos and Bengt. G. Svensson
Pages
48-54
DOI
10.4028/www.scientific.net/MSF.679-680.48
Citation
M. Camarda, A. La Magna, F. La Via, "Evolution of Extended Defects during Epitaxial Growths: A Monte Carlo Study", Materials Science Forum, Vols. 679-680, pp. 48-54, 2011
Online since
March 2011
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Price
$32.00
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